Roof Leaking From Vent

Fix a leaky roof vent pipe with a oatey rubber gasket.

Roof leaking from vent.

Items that penetrate the roof are by far the most common source of leaks. Use a pocketknife to scrape rough edges and sharp points from upper end of plastic vent pipe. Replace any missing or rotted siding above the step flashing on dormers. When this happens the water can seep into the house along the pipe.

Steps for fixing a leaking rooftop vent pipe. If the rubber boot is cracked rotted away or torn. Use the knife blade to scrape the pipe clean and smooth. Find the water entry point.

These pipes penetrate the roof. Make a temporary patch. Dig out any cracked or dry caulking that isn t properly sealing adjoining surfaces and replace with silicone caulk. It s when the seal around it has been broken.

Here are four common problems that can cause water to leak around vent pipes. Recaulk the corner flashing if any areas have hardened caulk. If your roof vent leaks with gentle rains as well you may have a problem with the shingles around the vent or exposed or loose nail heads. In addition to the causes above there is another possible cause for water dripping from roof vent pipes.

The immediate thing to do is to contain dripping water from the leak. Remove debris make sure your roof valleys are clear of debris re shingle valleys valleys may need to be reshingled with new ice and water shield put in place. In fact it s the most logical cause. The water entry point may not always the same as where the water drips.

Cut away the old caulk from around the vent pipe. Or it could be that the roof vent itself is cracked or damaged. In fact it s rare for leaks to develop in open areas of uninterrupted shingles even on older roofs. Rusty and cracked collars around the vent pipe can allow rainwater to pool and eventually drip into.